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You think probable to alpha particles.

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13y ago

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What subatomic particle is the least and most massive and which subatomic particle is respectively?

least - electron most - the top quark


What is the most massive elementary particle known to exist in the universe?

The most massive elementary particle known to exist in the universe is the top quark.


Is alpha particle the slowest?

For a given amount of energy, yes. Because its the most massive.


What particle is least massive?

The least massive principle atomic particle is the electron. Neutrons and protons are much more massive and are about equal in mass. Of course, there are even smaller particles such as quarks which are less massive than even electrons.


What particle in an atom is the least massive?

electron


What is made up of 2 protons and 2 neutrons?

In terms of radioactivity it is an alpha particle.


Most massive particles in an atom?

99.9% of an atom's mass is concentrated in the nucleus, with protons and neutrons having almost the same mass, with neutrons being slightly higher. So your question would be, 'What atom has the most protons and neutrons combined?' And that answer is Nobelium. Nobelium has 102 protons and 160 neutrons which makes it the most 'massive' atomic particle, even more so then Lawrencium which has 103 protons but only 159 neutrons. Of course, in a few months, we could have a new, more massive element.


What is helime?

Do you mean helium? An inert ("noble") gas, atomic number 2. An alpha particle (as in radioactivity) is a helium nucleus.


How massive is a alpha particle?

an alpha particle is made of two protons and 2 neutrons. its basically the same as the nucleus of a helium atom


What particle in the atom is the least massive?

least - electron most - the top quark


Who discovered radioactivity?

henri bacquerel discovered radioactivity in 1896.Artificial radioactivity was first discovered by Joliot Curie and her husband in 1934 while studying the effect of alpha particle bombardment on like elements like Aluminium


What was newtons law of universal gravitation?

Newton's Law of Universal Gravitation states that every massive particle in the universe attracts every other massive particle with a force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.